diff --git a/datadog_sync/utils/configuration.py b/datadog_sync/utils/configuration.py
index 879a5929..57df0cda 100644
--- a/datadog_sync/utils/configuration.py
+++ b/datadog_sync/utils/configuration.py
@@ -190,7 +190,7 @@ def build_config(cmd: Command, **kwargs: Optional[Any]) -> Configuration:
         for aws_config_property in AWS_CONFIG_PROPERTIES:
             property_value = kwargs.get(aws_config_property, None)
             if not property_value:
-                raise ValueError(f"Missing AWS configuration parameter: {aws_config_property}")
+                logger.warning(f"Missing AWS configuration parameter: {aws_config_property}")
             config[aws_config_property] = property_value
     elif storage_type == LOCAL_STORAGE_TYPE:
         logger.info("Using local filesystem to store state files")
diff --git a/datadog_sync/utils/storage/aws_s3_bucket.py b/datadog_sync/utils/storage/aws_s3_bucket.py
index 87e1939d..a752679f 100644
--- a/datadog_sync/utils/storage/aws_s3_bucket.py
+++ b/datadog_sync/utils/storage/aws_s3_bucket.py
@@ -40,13 +40,19 @@ def __init__(
         self.resource_per_file = resource_per_file
         if not config:
             raise ValueError("No S3 configuration passed in")
-        self.client = boto3.client(
-            "s3",
-            region_name=config.get("aws_region_name", ""),
-            aws_access_key_id=config.get("aws_access_key_id", ""),
-            aws_secret_access_key=config.get("aws_secret_access_key", ""),
-            aws_session_token=config.get("aws_session_token", ""),
-        )
+        elif config.get("aws_region_name", None):
+            log.info("AWS S3 configured with command line parameters or env vars")
+            self.client = boto3.client(
+                "s3",
+                region_name=config.get("aws_region_name", ""),
+                aws_access_key_id=config.get("aws_access_key_id", ""),
+                aws_secret_access_key=config.get("aws_secret_access_key", ""),
+                aws_session_token=config.get("aws_session_token", ""),
+            )
+        elif config.get("aws_bucket_name", None):
+            log.info("AWS S3 configured without command line parameters")
+            self.client = boto3.client("s3")
+
         self.bucket_name = config.get("aws_bucket_name", "")
 
     def get(self, origin: Origin) -> StorageData: